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Do people do informal freelance circuit design?

Discussion in 'Electronic Basics' started by SteadiSteve, Nov 29, 2003.

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  1. SteadiSteve

    SteadiSteve Guest

    Newbie question here....

    I'm interested in paying somebody to design some circuitry for me and/or
    provide advice of the same. Do people do this sort thing freelance? Would it
    be strange to approach, say, EE students at a university or something and ask
    them if they want to make a buck? Anything is possible of course but are
    people going to look at me strangely with such a request?

    What am I trying to do? I want to take two hand-driven shafts with
    (presumably) encoders on them and drive two servo motors to duplicate the
    movement. The purpose is to allow remote control of a motion picture geared
    head. The motors need to be reasonably powerful (in other words we are not
    talking about little R/C motors here).

    It seems to me this is an application that has been worked out a lot of ways
    before ...CNC, robotics, remote controls, etc.

    I have a elementary understanding of motion control/robotic control and I'm
    reading books to learn more but the design of this is clearly beyond me at this
    time. That said, it seems to me that it is, in a sense, not that difficult.
    I imagine there are many off-the-shelf parts now that could do things like
    drive the servos. I do believe I could write the software myself....I
    programmed in another life.

    It would be a project from I could learn a lot but would also have an immediate
    practical value for me.

    Thoughts anyone?
  2. It is very common.
    Servo's come in all sizes and powers.
  3. Rich Grise

    Rich Grise Guest

    You're not looking for servos, but synchros. ALso known as "Selsyn
    Motors." Try googling on those terms.

    (5 wires and an AC power source - you turn one shaft, the other
    unit turns exactly the same.)

    Good Luck!
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